by Kastro
Paper/Archive/CVE-2026-127277

CVE-2026-127277

Linksys EA8100 — Linksys EA8100 SMB Service service_smbd.sh initialization

CVSS 10.0
critical.is priorityof 100
30
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

A security flaw has been discovered in Linksys EA8100 1.0.3.216940. The affected element is an unknown function of the file etc/init.d/service_smbd.sh of the component SMB Service. Performing a manipulation of the argument ANON_ACCESS results in improper initialization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected

ProductAffectedFixed inSource
EA81001.0.3.216940–CNA

Scores by source

VulDB (CNA)10.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
VulDB (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C
VulDB (CNA)10.0CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C

References

writeupvuldb.com/vuln/436432refvuldb.com/vuln/436432/ctiwriteupvuldb.com/cve/CVE-2026-127277writeupvuldb.com/submit/1040999exploitgithub.com/geo-chen/oss/blob/main/Linksys.md#finding-5-smb-anonymous-access-mapped-to-the-admin-account-when-anonymous-access-is-enabledreflinksys.com